Merge pull request #8612 from souweb22/Delete_variable

Delete variable

src/Composer/DependencyResolver/Solver.php

@@ -679,7 +679,6 @@ class Solver
          */
 
         $decisionQueue = array();
-        $decisionSupplementQueue = array();
         /**
          * @todo this makes $disableRules always false; determine the rationale and possibly remove dead code?
          */
@@ -687,7 +686,6 @@ class Solver
 
         $level = 1;
         $systemLevel = $level + 1;
-        $installedPos = 0;
 
         while (true) {
             if (1 === $level) {